From: Dan Carpenter <dan.carpen...@oracle.com>
This is a static checker fix. The static checker says that q_size comes
from the user and can be any 32 bit value. The call tree is:
--> ib_uverbs_create_cq()
--> c2_create_cq()
--> c2_init_cq()
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
Signed-off-by: Doug Ledford <dledf...@redhat.com>
---
drivers/infiniband/hw/amso1100/c2_cq.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/hw/amso1100/c2_cq.c
b/drivers/infiniband/hw/amso1100/c2_cq.c
index 49e0e8533f7..1b63185b4ad 100644
--- a/drivers/infiniband/hw/amso1100/c2_cq.c
+++ b/drivers/infiniband/hw/amso1100/c2_cq.c
@@ -260,11 +260,14 @@ static void c2_free_cq_buf(struct c2_dev *c2dev, struct
c2_mq *mq)
mq->msg_pool.host, dma_unmap_addr(mq, mapping));
}
-static int c2_alloc_cq_buf(struct c2_dev *c2dev, struct c2_mq *mq, int q_size,
- int msg_size)
+static int c2_alloc_cq_buf(struct c2_dev *c2dev, struct c2_mq *mq,
+ size_t q_size, size_t msg_size)
{
u8 *pool_start;
+ if (q_size > SIZE_MAX / msg_size)
+ return -EINVAL;
+
pool_start = dma_alloc_coherent(&c2dev->pcidev->dev, q_size * msg_size,
&mq->host_dma, GFP_KERNEL);
if (!pool_start)
--
1.9.3
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